CN212745479U

CN212745479U - Quick connector

Info

Publication number: CN212745479U
Application number: CN202020402491.3U
Authority: CN
Inventors: 冯家靖; 周列芳
Original assignee: Suzhou Desenfu Automobile Technology Co ltd
Current assignee: Suzhou Desenfu Automobile Technology Co ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2021-03-19
Anticipated expiration: 2030-03-26

Abstract

A quick connector comprises a male connector, a locking flange, a female connector and a locking piece. The female joint includes a tubular body, a locking hole unit. The tubular main body sequentially comprises a first pipe body, a second pipe body and a locking pipe body. The locking hole unit comprises a first mounting hole, a second mounting hole and a locking block. Each locking block comprises a locking block body and a locking groove. The locking piece comprises a locking cover, an elastic limiting arm and a locking arm. The elastic limiting arms comprise limiting arm bodies, limiting blocks and retaining pieces. Each locking arm comprises a locking arm main body and an arc-shaped groove. Each elastic limiting arm inclines to one side far away from the first pipe body, so that the limiting block is abutted to the locking block, and the position of the locking piece on the female joint is limited. This quick-operation joint has realized that the locking piece can half insert on the box, has reduced the step and the time of installation, has improved the installation effectiveness, avoids losing of locking piece.

Description

Quick connector

Technical Field

The utility model belongs to the technical field of the pipeline jointing equipment, especially a quick-operation joint.

Background

The quick connector is a connector which can realize the connection or disconnection of pipelines without tools. At present, a quick coupling includes a female coupling, a male coupling, and a locking member, and a plurality of locking flanges are disposed on a sidewall of the male coupling, and the locking member is inserted into the female coupling, and the locking member is clamped on both sides of the locking flanges, so that the female coupling and the male coupling are connected together.

However, in the above scheme, the locking member is only in two states of insertion or removal, and the locking member must be removed and then installed during use, so that the steps are complicated, the locking member is easily lost, and in addition, in the process of installing the locking member to the female connector, a user needs to operate with both hands simultaneously, so that the locking member is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a quick-operation joint convenient to operation to satisfy the industrial demand.

A quick connector comprises a male connector, two locking flanges arranged on the side wall of the male connector at intervals, a female connector sleeved on the male connector, and a locking piece inserted on the female connector. The female coupler includes a tubular body, and a locking hole unit provided on the tubular body. The tubular main body sequentially comprises a first pipe body, a second pipe body and a locking pipe body. The locking hole unit comprises a first mounting hole arranged on the locking pipe body, two second mounting holes arranged on the locking pipe body and corresponding to the first mounting hole, and two locking blocks symmetrically arranged in the locking pipe body. Each locking block comprises a locking block main body and a locking groove arranged on the locking block main body. The locking piece comprises a locking cover, two elastic limiting arms symmetrically arranged on the locking cover and two locking arms symmetrically arranged on the locking cover. The locking arm and the elastic limiting arm are arranged at intervals along the axial direction of the female joint. The elastic limiting arm comprises a limiting arm main body, a limiting block and a retaining piece, wherein the limiting block is arranged on one side of the limiting arm main body facing the locking arm, and the retaining piece is arranged on one side of the limiting arm main body. The retaining member on each of the resilient retention arms faces the other of the resilient retention arms. Each locking arm comprises a locking arm main body and an arc-shaped groove arranged on one side of the locking arm main body. And a connecting line between the first mounting hole and the second mounting hole which correspond to each other is vertical to a connecting line between the two locking blocks. Each elastic limiting arm inclines to one side far away from the first pipe body, so that the limiting block is abutted to the locking block, and the position of the locking piece on the female joint is limited.

Furthermore, the quick coupling further comprises a sealing assembly accommodated in the female coupling, the sealing assembly comprises a sealing device accommodated in the female coupling and a positioning part arranged on one side of the sealing device, each sealing device comprises two sealing rings and a spacer ring, the spacer ring is arranged between the two sealing rings, and the positioning part comprises a positioning ring, two mounting arms fixedly connected to two sides of the positioning ring and two positioning lugs respectively arranged on the mounting arms.

Furthermore, the locking hole unit further comprises two positioning mounting holes respectively formed in the side wall of the locking pipe body, and two clamping blocks respectively formed in the second mounting holes, one positioning mounting hole is formed between the two first mounting holes, and the other positioning mounting hole is formed between the two second mounting holes.

Furthermore, each limiting arm body comprises a first elastic arm and a second elastic arm arranged on the side wall of one end of the first elastic arm, and the outer contour of each elastic limiting arm is L-shaped.

Further, the thickness of one end of the first elastic arm close to the locking cover is larger than that of one end far away from the locking cover.

Further, when the elastic limiting arm is completely inserted into the second mounting hole, the second elastic arm is abutted to the clamping block.

Furthermore, each locking piece all to the center pin direction protrusion of locking body, just the locking piece back to set up the chamfer on the side of second body.

Further, the locking element further comprises two axial support blocks disposed on the locking cover, each of the axial support blocks being connected to one of the locking arms.

Furthermore, on the cross section along the female joint center axis, one side of the locking groove close to the second mounting hole is provided with a chamfer, one side of the locking block main body far away from the second mounting hole is provided with a chamfer, and one side of the limiting block far away from the locking cover is provided with a chamfer.

Further, in a cross section along the central axis of the female joint, an edge of the second pipe body on a side close to the locking pipe body is gradually inclined toward the second pipe body from the second mounting hole toward the first mounting hole.

Compared with the prior art, the utility model provides a quick-operation joint is through passing through locking piece on the locking hole unit, and on the spacing arm of elasticity the stopper is realized the locking piece is half inserted and is fixed in on the cloudy joint. Each locking block comprises a locking block main body and a locking groove arranged on the locking block main body. The limiting block of the elastic limiting arm can be inserted into the locking groove. In addition, a connecting line between the first mounting hole and the second mounting hole is perpendicular to a connecting line between the two locking blocks, and each elastic limiting arm inclines to one side far away from the first pipe body on the section along the central axis of the female joint, so that when the elastic limiting arm passes through the first mounting hole and leads to the second mounting hole, the limiting block can be abutted to the locking block. When the limiting block is accommodated in the locking groove, the locking piece is partially fixed on the female joint. When the male joint needs to be locked, the locking piece is driven to move towards one side of the second mounting hole, so that the locking piece is completely accommodated in the locking hole unit, and the limiting block is abutted against one side, close to the second mounting hole, of the locking piece main body, so that the position of the locking piece is fixed. This quick-operation joint has reduced the step and the time of installation, has improved the installation effectiveness, has realized that the locking piece can half insert on the female joint, avoids losing of locking piece.

Drawings

Fig. 1 is an exploded schematic view of the quick coupling of the present invention.

FIG. 2 is a schematic cross-sectional view of the quick coupling of FIG. 1

Fig. 3 is a schematic structural view of a female coupling of the quick coupling of fig. 1.

Fig. 4 is a schematic sectional structure view of the female connector of fig. 2.

Fig. 5 is a schematic view of the locking member of the quick connector of fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to 5, it is a schematic structural diagram of the quick coupling provided by the present invention. The quick coupling includes a male coupling 1, two locking flanges 2 spaced apart from each other on a sidewall of the male coupling 1, a female coupling 10 fitted over the male coupling 1, a locking member 20 received on the female coupling 10, and a sealing member 30 received in the female coupling 10. The quick connector also includes other functional modules, such as assembly components, etc., which should be known to those skilled in the art, and will not be described in detail herein.

The male joint 1 is used for connecting other parts, and is a prior art, and will not be described in detail herein.

The locking flange 2 cooperates with the locking member 20 to restrict the position of the male coupler 1 by the locking member 20 to stabilize the position of the male coupler 1 inside the female coupler 10, which will be described in detail in connection with the locking member 20. The locking flange 2 is a prior art and will not be described in detail here.

The female coupler 10 includes a tubular body 11, and a locking hole unit 12 provided on the tubular body 11.

The tubular body 11 comprises, in sequence, a first tubular body 111, a second tubular body 112, a locking tubular body 113. The diameters of the first pipe 111, the second pipe 112, and the locking pipe 113 are sequentially increased, so that the connection positions between the first pipe 111, the second pipe 112, and the locking pipe 113 are stepped to restrict the position of the male connector 1 within the tubular body 11.

The locking hole unit 12 includes a first mounting hole 121 formed in the locking pipe 113, two second mounting holes 122 formed in the locking pipe 113 and corresponding to the first mounting hole 121, two locking blocks 123 symmetrically disposed in the locking pipe 113, two positioning mounting holes 124 respectively formed in sidewalls of the locking pipe 113, and two locking blocks 125 respectively disposed in the second mounting holes 122. Each of the locking blocks 123 protrudes toward the central axis of the locking pipe 113, and a chamfer is provided on the side of the locking block 123 facing away from the second pipe 112 to guide the locking block 123 into the female connector 10, so that the male connector 1 can be easily installed into the female connector 10. Each of the locking blocks 123 includes a locking block body 1231, and a locking groove 1232 provided on the locking block body 1231. The locking groove 1232 of the locking hole unit 12 is used to accommodate the locking member 20, so that the locking member 20 can be half inserted on the tubular body 11 and be positioned stably on the tubular body 11. In addition, in the present embodiment, one of the positioning mounting holes 124 is disposed between the two first mounting holes 121, and the other positioning mounting hole 124 is disposed between the two second mounting holes 122, and the positioning mounting hole 124 is described in conjunction with the sealing assembly 30.

The locking member 20 includes a locking cover 21, two elastic limiting arms 22 symmetrically disposed on the locking cover 21, two locking arms 23 symmetrically disposed on the locking cover 21, and two axial supporting blocks 24 disposed on the locking cover 21.

The locking cover 21 connects the elastic stopper arm 22 and the locking arm 23 to form a single body. The locking arm 23 and the elastic limiting arm 22 are arranged at an interval along the axial direction of the female joint 10, and when the male joint 1 is installed, the locking flange 2 is clamped between the locking arm 23 and the elastic limiting arm 22, so that the position of the male joint 1 is limited, and the male joint 1 and the female joint 10 are fixedly connected together.

Each of the elastic stopper arms 22 includes a stopper arm main body 221, a stopper 222 provided on a side of the stopper arm main body 221 facing the lock arm 23, and a holding member 223 provided on a side of the stopper arm main body. When the male connector 1 is inserted into the female connector 10, the locking flange 2 is interposed between the holder 223 and the locking arm 23 to restrict the position of the male connector 1. In a cross section along the central axis of the female connector 10, each of the elastic limiting arms 22 is inclined to a side away from the first pipe 111, so that when the elastic limiting arm 22 passes through the first mounting hole 121 to the second mounting hole 122, the limiting block 222 can abut against the locking block 123, thereby limiting the position of the locking member 20 on the female connector 10, and realizing half insertion and stable position of the locking member 20 into the locking hole unit 12.

Each of the position limiting arm bodies 221 includes a first elastic arm 2211, and a second elastic arm 2212 disposed on a side wall of one end of the first elastic arm 2211, and an outer contour of each of the elastic position limiting arms 221 is L-shaped, when the locking member 20 is completely inserted into the locking hole unit 12, the locking member 20 is hooked on the latch 125, and the second elastic arm 2212 abuts against the latch 125, so that the position of the locking cover 21 is limited by the position limiting arm body 221 and the position limiting block 222. The thickness of the end of the first resilient arm 2211 close to the locking cover 21 is greater than that of the end far from the locking cover 21, and it is conceivable that the first resilient arm 2211 is stepped as a whole to increase the strength between the first resilient arm 2211 and the locking cover 21.

The stop block 222 cooperates with the locking block 123 to limit the position of the locking member 20. In a cross section along the central axis of the female connector 10, a side of the locking groove 1232 close to the second mounting hole 122 is chamfered, a side of the locking block main body 1231 away from the second mounting hole 122 is chamfered, and a side of the stopper 222 away from the locking cover 21 is chamfered, so that the locking member 20 can be moved from the first mounting hole 121 to the second mounting hole 122.

The retaining pieces 223 of each of the elastic limiting arms 22 face the other elastic limiting arm 22, when the female connector 10 is inserted into the female connector 10, the locking flange 2 cannot pass through the retaining pieces 223, and the position of the male connector 1 is limited. When the limiting block 222 is received in the locking groove 1232, half of the locking member 20 is inserted into the locking hole unit 12, and the locking member 20 is fixed on the female connector 10, at this time, the locking arm 23 is not abutted against the side wall of the male connector 1, so the locking member 20 does not limit the position of the male connector 1, and the male connector 1 can move along the axial direction of the female connector 10. When the male joint 1 needs to be locked, the locking member 20 is driven to move to the second mounting hole 122 side, so that the locking member 20 is entirely accommodated in the locking hole unit 12, at this time, the stopper 222 slides out of the locking groove 1232 to move to the side of the stopper main body 1231 close to the second mounting hole 122, so that the stopper 222 abuts against the side of the locking block main body 1231 close to the second mounting hole 122, thereby limiting the position of the locking member 20, and at this time, the locking arm 23 abuts against the side wall of the male joint 1, and the locking flange 2 is interposed between the locking arm 23 and the retaining member 223, so that the male joint 1 is locked in the female joint 10. When the locking element 20 is unlocked, the end of the elastic limiting arm 22 close to one end of the second mounting hole 122 is pressed downwards, so that the limiting block 222 is separated from the locking groove 1232, and the locking element 20 can move to realize unlocking.

Each of the lock arms 23 includes a lock arm main body 231, and an arc-shaped groove 232 provided at one side of the lock arm main body 231. The arcuate profile of the arcuate slot 232 is equal to the diameter of the male fitting 1, so that when the locking arms 23 abut against the male fitting 1, so that the two locking arms 23 can clamp the male fitting 1.

Each of the axial support blocks 24 is connected to one of the locking arms 23 to increase the strength of the locking arm 23 and prevent the locking arm 23 from being shaken.

Each of the first mounting holes 121 corresponds to the second mounting hole 122, and a connection line between the corresponding first mounting hole 121 and the corresponding second mounting hole 122 is perpendicular to a connection line between the two locking blocks 123, so as to ensure that the positions of the limiting block 222 and the locking block 123 are necessarily overlapped when the locking member 20 is inserted into the locking hole unit 12, so as to connect the limiting block 222 and the locking block 123. In a cross section along the central axis of the female connector 10, from the second mounting hole 122 to the first mounting hole 121, the edge of the second tube 112 on the side close to the locking tube 113 is gradually inclined toward the second tube 112, so that the gap close to the second mounting hole 122 is large, and the elastic stopper arm 22 has enough space to move when the stopper 222 and the locking piece 123 are overlapped.

The sealing assembly 30 includes a sealing device 31 received in the female connector 10, and a positioning member 32 provided at one side of the sealing device 31.

Each sealing device 31 comprises two sealing rings 311 and a spacer ring 312, wherein the spacer ring 312 is arranged between the two sealing rings 311, so that the two sealing rings 311 are separated, and the sealing rings 311 are prevented from deforming after being pressurized, so that a good sealing effect cannot be achieved.

The positioning component 32 includes a positioning ring 321, two mounting arms 322 fixedly connected to two sides of the positioning ring 321, and two positioning protrusions 323 respectively disposed on the mounting arms 322. The two positioning protrusions 323 are respectively received in the positioning mounting holes 124, so that the positioning member 32 is fixed in the female connector 10, and the position of the sealing device 31 in the female connector 10 is limited.

Compared with the prior art, the utility model provides a quick-operation joint is through locking piece 123 on the locking hole unit 12, and on the spacing arm 22 of elasticity stopper 222 realizes locking piece 20 is half inserted and is established and be fixed in on the female joint 10. Each of the locking blocks 123 includes a locking block body 1231, and a locking groove 1232 provided on the locking block body 1231. The limiting block 222 of the elastic limiting arm 22 can be inserted into the locking groove 1232. In addition, a line between the first mounting hole 121 and the second mounting hole 122 and a line between the two locking blocks 123 are perpendicular to each other, and each of the elastic stopper arms 22 is inclined to a side away from the first pipe 111 in a cross section along a central axis of the female joint 10, so that the stopper 222 can abut against the locking blocks 123 when the elastic stopper arm 22 passes through the first mounting hole 121 to pass through the second mounting hole 122. When the stop block 222 is received in the locking groove 1232, the locking member 20 is partially fixed to the female connector 10. When the male connector 1 needs to be locked, the locking member 20 is driven to move toward the second mounting hole 122, so that the locking member 20 is completely accommodated in the locking hole unit 12, and the position of the locking member 20 is fixed by the abutment of the limiting block 222 and the locking block main body 1231 on the side close to the second mounting hole 122. The locking piece of the quick connector can be inserted into the female connector in half, so that the steps and time for installation are reduced, the installation efficiency is improved, and the locking piece is prevented from being lost.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. A quick connector comprising a male connector, two locking flanges spaced apart on a side wall of said male connector, wherein: the quick connector also comprises a female connector sleeved on the male connector and a locking piece inserted on the female connector, the female connector comprises a tubular main body, a locking hole unit arranged on the tubular main body, the tubular main body sequentially comprises a first pipe body, a second pipe body and a locking pipe body, the locking hole unit comprises a first mounting hole arranged on the locking pipe body, two second mounting holes arranged on the locking pipe body and corresponding to the first mounting holes, and two locking blocks symmetrically arranged in the locking pipe body, each locking block comprises a locking block main body and a locking groove arranged on the locking block main body, the locking piece comprises a locking cover, two elastic limiting arms symmetrically arranged on the locking cover, and two locking arms symmetrically arranged on the locking cover, the locking arms and the elastic limiting arms are arranged at intervals along the axial direction of the female joint, each elastic limiting arm comprises a limiting arm main body, a limiting block arranged on one side, facing the locking arm, of the limiting arm main body, a retaining piece arranged on one side of the limiting arm main body, each retaining piece on each elastic limiting arm faces towards the other elastic limiting arm, each locking arm comprises a locking arm main body, an arc-shaped groove arranged on one side of the locking arm main body, a connecting line between the first mounting hole and the second mounting hole which correspond to each other is perpendicular to a connecting line between the two locking blocks, and each elastic limiting arm inclines towards one side far away from the first pipe body, so that the stopper abuts against the locking piece to restrict the position of the locking piece on the female joint.

2. The quick connector of claim 1, wherein: the quick connector further comprises a sealing assembly accommodated in the female connector, the sealing assembly comprises a sealing device accommodated in the female connector and a positioning piece arranged on one side of the sealing device, each sealing device comprises two sealing rings and a spacer ring, the spacer ring is arranged between the two sealing rings, and the positioning piece comprises a positioning ring, two mounting arms fixedly connected to two sides of the positioning ring and two positioning lugs respectively arranged on the mounting arms.

3. The quick connector of claim 2, wherein: the locking hole unit further comprises two positioning mounting holes which are formed in the side wall of the locking pipe body respectively, and two clamping blocks which are arranged in the second mounting holes respectively, one positioning mounting hole is formed between the two first mounting holes, and the other positioning mounting hole is formed between the two second mounting holes.

4. The quick connector of claim 3, wherein: each limiting arm body comprises a first elastic arm and a second elastic arm arranged on the side wall of one end of the first elastic arm, and the outer contour of each elastic limiting arm is L-shaped.

5. The quick connector of claim 4, wherein: the thickness of one end of the first elastic arm close to the locking cover is larger than that of one end far away from the locking cover.

6. The quick connector of claim 4, wherein: when the elastic limiting arm is completely inserted into the second mounting hole, the second elastic arm is abutted to the clamping block.

7. The quick connector of claim 1, wherein: every the locking piece all to the center pin direction protrusion of locking body, just the locking piece dorsad set up the chamfer on the side of second body.

8. The quick connector of claim 1, wherein: the locking piece further comprises two axial support blocks arranged on the locking cover, and each axial support block is connected with one locking arm.

9. The quick connector of claim 1, wherein: the edge on the cross-section of female joint center pin, the locking recess is close to one side of second mounting hole sets up the chamfer, the locking piece main part is kept away from one side of second mounting hole sets up the chamfer, the stopper is kept away from one side of locking lid sets up the chamfer.

10. The quick connector of claim 1, wherein: in a cross section along the central axis of the female joint, an edge of the second pipe body on a side close to the locking pipe body is gradually inclined toward the second pipe body from the second mounting hole toward the first mounting hole.